$(function () {
    var canvas = document.querySelector('canvas'),
    ctx = canvas.getContext('2d')
    canvas.width = window.innerWidth;
    canvas.height = window.innerHeight;
    ctx.lineWidth = .3;
    ctx.strokeStyle = (new Color(200)).style;

    var mousePosition = {
    x: 30 * canvas.width / 100,
    y: 30 * canvas.height / 100
};

    var dots = {
    nb: 750,
    distance: 50,
    d_radius: 100,
    array: []
};

    function colorValue(min) {
    return Math.floor(Math.random() * 255 + min);
}

    function createColorStyle(r, g, b) {
    return 'rgba(' + r + ',' + g + ',' + b + ', 0.8)';
}

    function mixComponents(comp1, weight1, comp2, weight2) {
    return (comp1 * weight1 + comp2 * weight2) / (weight1 + weight2);
}

    function averageColorStyles(dot1, dot2) {
    var color1 = dot1.color,
    color2 = dot2.color;

    var r = mixComponents(color1.r, dot1.radius, color2.r, dot2.radius),
    g = mixComponents(color1.g, dot1.radius, color2.g, dot2.radius),
    b = mixComponents(color1.b, dot1.radius, color2.b, dot2.radius);
    return createColorStyle(Math.floor(r), Math.floor(g), Math.floor(b));
}

    function Color(min) {
    min = min || 0;
    this.r = colorValue(min);
    this.g = colorValue(min);
    this.b = colorValue(min);
    this.style = createColorStyle(this.r, this.g, this.b);
}

    function Dot() {
    this.x = Math.random() * canvas.width;
    this.y = Math.random() * canvas.height;

    this.vx = -.5 + Math.random();
    this.vy = -.5 + Math.random();

    this.radius = Math.random() * 2;

    this.color = new Color();
    console.log(this);
}

    Dot.prototype = {
    draw: function () {
    ctx.beginPath();
    ctx.fillStyle = this.color.style;
    ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2, false);
    ctx.fill();
}
};

    function createDots() {
    for (i = 0; i < dots.nb; i++) {
    dots.array.push(new Dot());
}
}

    function moveDots() {
    for (i = 0; i < dots.nb; i++) {

    var dot = dots.array[i];

    if (dot.y < 0 || dot.y > canvas.height) {
    dot.vx = dot.vx;
    dot.vy = -dot.vy;
} else if (dot.x < 0 || dot.x > canvas.width) {
    dot.vx = -dot.vx;
    dot.vy = dot.vy;
}
    dot.x += dot.vx;
    dot.y += dot.vy;
}
}

    function connectDots() {
    for (i = 0; i < dots.nb; i++) {
    for (j = 0; j < dots.nb; j++) {
    i_dot = dots.array[i];
    j_dot = dots.array[j];

    if ((i_dot.x - j_dot.x) < dots.distance && (i_dot.y - j_dot.y) < dots.distance && (i_dot.x - j_dot.x) > -dots.distance && (i_dot.y - j_dot.y) > -dots.distance) {
    if ((i_dot.x - mousePosition.x) < dots.d_radius && (i_dot.y - mousePosition.y) < dots.d_radius && (i_dot.x - mousePosition.x) > -dots.d_radius && (i_dot.y - mousePosition.y) > -dots.d_radius) {
    ctx.beginPath();
    ctx.strokeStyle = averageColorStyles(i_dot, j_dot);
    ctx.moveTo(i_dot.x, i_dot.y);
    ctx.lineTo(j_dot.x, j_dot.y);
    ctx.stroke();
    ctx.closePath();
}
}
}
}
}

    function drawDots() {
    for (i = 0; i < dots.nb; i++) {
    var dot = dots.array[i];
    dot.draw();
}
}

    function animateDots() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    moveDots();
    connectDots();
    drawDots();

    requestAnimationFrame(animateDots);
}

    $('canvas').on('mousemove', function (e) {
    mousePosition.x = e.pageX;
    mousePosition.y = e.pageY;
});

    $('canvas').on('mouseleave', function (e) {
    mousePosition.x = canvas.width / 2;
    mousePosition.y = canvas.height / 2;
});

    createDots();
    requestAnimationFrame(animateDots);
});
